20195880

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:195

約数の個数: 128

約数和(自身を含む): 64281600

約数和(自身を除く): 44085720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 61, 62, 89, 93, 120, 122, 124, 155, 178, 183, 186, 244, 248, 267, 305, 310, 356, 366, 372, 445, 465, 488, 534, 610, 620, 712, 732, 744, 890, 915, 930, 1068, 1220, 1240, 1335, 1464, 1780, 1830, 1860, 1891, 2136, 2440, 2670, 2759, 3560, 3660, 3720, 3782, 5340, 5429, 5518, 5673, 7320, 7564, 8277, 9455, 10680, 10858, 11036, 11346, 13795, 15128, 16287, 16554, 18910, 21716, 22072, 22692, 27145, 27590, 28365, 32574, 33108, 37820, 41385, 43432, 45384, 54290, 55180, 56730, 65148, 66216, 75640, 81435, 82770, 108580, 110360, 113460, 130296, 162870, 165540, 168299, 217160, 226920, 325740, 331080, 336598, 504897, 651480, 673196, 841495, 1009794, 1346392, 1682990, 2019588, 2524485, 3365980, 4039176, 5048970, 6731960, 10097940, 20195880]

約数ペア:

[(1, 20195880), (2, 10097940), (3, 6731960), (4, 5048970), (5, 4039176), (6, 3365980), (8, 2524485), (10, 2019588), (12, 1682990), (15, 1346392), (20, 1009794), (24, 841495), (30, 673196), (31, 651480), (40, 504897), (60, 336598), (61, 331080), (62, 325740), (89, 226920), (93, 217160), (120, 168299), (122, 165540), (124, 162870), (155, 130296), (178, 113460), (183, 110360), (186, 108580), (244, 82770), (248, 81435), (267, 75640), (305, 66216), (310, 65148), (356, 56730), (366, 55180), (372, 54290), (445, 45384), (465, 43432), (488, 41385), (534, 37820), (610, 33108), (620, 32574), (712, 28365), (732, 27590), (744, 27145), (890, 22692), (915, 22072), (930, 21716), (1068, 18910), (1220, 16554), (1240, 16287), (1335, 15128), (1464, 13795), (1780, 11346), (1830, 11036), (1860, 10858), (1891, 10680), (2136, 9455), (2440, 8277), (2670, 7564), (2759, 7320), (3560, 5673), (3660, 5518), (3720, 5429), (3782, 5340)]