20306240

素因数分解:

$2^6\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1$

素因数の和:160

約数の個数: 112

約数和(自身を含む): 52669440

約数和(自身を除く): 32363200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 32, 40, 46, 62, 64, 80, 89, 92, 115, 124, 155, 160, 178, 184, 230, 248, 310, 320, 356, 368, 445, 460, 496, 620, 712, 713, 736, 890, 920, 992, 1240, 1424, 1426, 1472, 1780, 1840, 1984, 2047, 2480, 2759, 2848, 2852, 3560, 3565, 3680, 4094, 4960, 5518, 5696, 5704, 7120, 7130, 7360, 8188, 9920, 10235, 11036, 11408, 13795, 14240, 14260, 16376, 20470, 22072, 22816, 27590, 28480, 28520, 32752, 40940, 44144, 45632, 55180, 57040, 63457, 65504, 81880, 88288, 110360, 114080, 126914, 131008, 163760, 176576, 220720, 228160, 253828, 317285, 327520, 441440, 507656, 634570, 655040, 882880, 1015312, 1269140, 2030624, 2538280, 4061248, 5076560, 10153120, 20306240]

約数ペア:

[(1, 20306240), (2, 10153120), (4, 5076560), (5, 4061248), (8, 2538280), (10, 2030624), (16, 1269140), (20, 1015312), (23, 882880), (31, 655040), (32, 634570), (40, 507656), (46, 441440), (62, 327520), (64, 317285), (80, 253828), (89, 228160), (92, 220720), (115, 176576), (124, 163760), (155, 131008), (160, 126914), (178, 114080), (184, 110360), (230, 88288), (248, 81880), (310, 65504), (320, 63457), (356, 57040), (368, 55180), (445, 45632), (460, 44144), (496, 40940), (620, 32752), (712, 28520), (713, 28480), (736, 27590), (890, 22816), (920, 22072), (992, 20470), (1240, 16376), (1424, 14260), (1426, 14240), (1472, 13795), (1780, 11408), (1840, 11036), (1984, 10235), (2047, 9920), (2480, 8188), (2759, 7360), (2848, 7130), (2852, 7120), (3560, 5704), (3565, 5696), (3680, 5518), (4094, 4960)]