20927880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{953}}^1$

素因数の和:1031

約数の個数: 96

約数和(自身を含む): 69203160

約数和(自身を除く): 48275280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 61, 72, 90, 120, 122, 180, 183, 244, 305, 360, 366, 488, 549, 610, 732, 915, 953, 1098, 1220, 1464, 1830, 1906, 2196, 2440, 2745, 2859, 3660, 3812, 4392, 4765, 5490, 5718, 7320, 7624, 8577, 9530, 10980, 11436, 14295, 17154, 19060, 21960, 22872, 28590, 34308, 38120, 42885, 57180, 58133, 68616, 85770, 114360, 116266, 171540, 174399, 232532, 290665, 343080, 348798, 465064, 523197, 581330, 697596, 871995, 1046394, 1162660, 1395192, 1743990, 2092788, 2325320, 2615985, 3487980, 4185576, 5231970, 6975960, 10463940, 20927880]

約数ペア:

[(1, 20927880), (2, 10463940), (3, 6975960), (4, 5231970), (5, 4185576), (6, 3487980), (8, 2615985), (9, 2325320), (10, 2092788), (12, 1743990), (15, 1395192), (18, 1162660), (20, 1046394), (24, 871995), (30, 697596), (36, 581330), (40, 523197), (45, 465064), (60, 348798), (61, 343080), (72, 290665), (90, 232532), (120, 174399), (122, 171540), (180, 116266), (183, 114360), (244, 85770), (305, 68616), (360, 58133), (366, 57180), (488, 42885), (549, 38120), (610, 34308), (732, 28590), (915, 22872), (953, 21960), (1098, 19060), (1220, 17154), (1464, 14295), (1830, 11436), (1906, 10980), (2196, 9530), (2440, 8577), (2745, 7624), (2859, 7320), (3660, 5718), (3812, 5490), (4392, 4765)]