399911120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{509}}^1$

素因数の和:613

約数の個数: 160

約数和(自身を含む): 1129213440

約数和(自身を除く): 729302320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 61, 70, 80, 92, 112, 115, 122, 140, 161, 184, 230, 244, 280, 305, 322, 368, 427, 460, 488, 509, 560, 610, 644, 805, 854, 920, 976, 1018, 1220, 1288, 1403, 1610, 1708, 1840, 2036, 2135, 2440, 2545, 2576, 2806, 3220, 3416, 3563, 4072, 4270, 4880, 5090, 5612, 6440, 6832, 7015, 7126, 8144, 8540, 9821, 10180, 11224, 11707, 12880, 14030, 14252, 17080, 17815, 19642, 20360, 22448, 23414, 28060, 28504, 31049, 34160, 35630, 39284, 40720, 46828, 49105, 56120, 57008, 58535, 62098, 71260, 78568, 81949, 93656, 98210, 112240, 117070, 124196, 142520, 155245, 157136, 163898, 187312, 196420, 217343, 234140, 248392, 285040, 310490, 327796, 392840, 409745, 434686, 468280, 496784, 620980, 655592, 714127, 785680, 819490, 869372, 936560, 1086715, 1241960, 1311184, 1428254, 1638980, 1738744, 2173430, 2483920, 2856508, 3277960, 3477488, 3570635, 4346860, 4998889, 5713016, 6555920, 7141270, 8693720, 9997778, 11426032, 14282540, 17387440, 19995556, 24994445, 28565080, 39991112, 49988890, 57130160, 79982224, 99977780, 199955560, 399911120]

約数ペア:

[(1, 399911120), (2, 199955560), (4, 99977780), (5, 79982224), (7, 57130160), (8, 49988890), (10, 39991112), (14, 28565080), (16, 24994445), (20, 19995556), (23, 17387440), (28, 14282540), (35, 11426032), (40, 9997778), (46, 8693720), (56, 7141270), (61, 6555920), (70, 5713016), (80, 4998889), (92, 4346860), (112, 3570635), (115, 3477488), (122, 3277960), (140, 2856508), (161, 2483920), (184, 2173430), (230, 1738744), (244, 1638980), (280, 1428254), (305, 1311184), (322, 1241960), (368, 1086715), (427, 936560), (460, 869372), (488, 819490), (509, 785680), (560, 714127), (610, 655592), (644, 620980), (805, 496784), (854, 468280), (920, 434686), (976, 409745), (1018, 392840), (1220, 327796), (1288, 310490), (1403, 285040), (1610, 248392), (1708, 234140), (1840, 217343), (2036, 196420), (2135, 187312), (2440, 163898), (2545, 157136), (2576, 155245), (2806, 142520), (3220, 124196), (3416, 117070), (3563, 112240), (4072, 98210), (4270, 93656), (4880, 81949), (5090, 78568), (5612, 71260), (6440, 62098), (6832, 58535), (7015, 57008), (7126, 56120), (8144, 49105), (8540, 46828), (9821, 40720), (10180, 39284), (11224, 35630), (11707, 34160), (12880, 31049), (14030, 28504), (14252, 28060), (17080, 23414), (17815, 22448), (19642, 20360)]