208678520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1$

素因数の和:289

約数の個数: 128

約数和(自身を含む): 522849600

約数和(自身を除く): 314171080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 37, 38, 40, 41, 74, 76, 82, 95, 148, 152, 164, 181, 185, 190, 205, 296, 328, 362, 370, 380, 410, 703, 724, 740, 760, 779, 820, 905, 1406, 1448, 1480, 1517, 1558, 1640, 1810, 2812, 3034, 3116, 3439, 3515, 3620, 3895, 5624, 6068, 6232, 6697, 6878, 7030, 7240, 7421, 7585, 7790, 12136, 13394, 13756, 14060, 14842, 15170, 15580, 17195, 26788, 27512, 28120, 28823, 29684, 30340, 31160, 33485, 34390, 37105, 53576, 57646, 59368, 60680, 66970, 68780, 74210, 115292, 127243, 133940, 137560, 140999, 144115, 148420, 230584, 254486, 267880, 274577, 281998, 288230, 296840, 508972, 549154, 563996, 576460, 636215, 704995, 1017944, 1098308, 1127992, 1152920, 1272430, 1372885, 1409990, 2196616, 2544860, 2745770, 2819980, 5089720, 5216963, 5491540, 5639960, 10433926, 10983080, 20867852, 26084815, 41735704, 52169630, 104339260, 208678520]

約数ペア:

[(1, 208678520), (2, 104339260), (4, 52169630), (5, 41735704), (8, 26084815), (10, 20867852), (19, 10983080), (20, 10433926), (37, 5639960), (38, 5491540), (40, 5216963), (41, 5089720), (74, 2819980), (76, 2745770), (82, 2544860), (95, 2196616), (148, 1409990), (152, 1372885), (164, 1272430), (181, 1152920), (185, 1127992), (190, 1098308), (205, 1017944), (296, 704995), (328, 636215), (362, 576460), (370, 563996), (380, 549154), (410, 508972), (703, 296840), (724, 288230), (740, 281998), (760, 274577), (779, 267880), (820, 254486), (905, 230584), (1406, 148420), (1448, 144115), (1480, 140999), (1517, 137560), (1558, 133940), (1640, 127243), (1810, 115292), (2812, 74210), (3034, 68780), (3116, 66970), (3439, 60680), (3515, 59368), (3620, 57646), (3895, 53576), (5624, 37105), (6068, 34390), (6232, 33485), (6697, 31160), (6878, 30340), (7030, 29684), (7240, 28823), (7421, 28120), (7585, 27512), (7790, 26788), (12136, 17195), (13394, 15580), (13756, 15170), (14060, 14842)]