20194980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1523}}^1$

素因数の和:1565

約数の個数: 96

約数和(自身を含む): 64520064

約数和(自身を除く): 44325084

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 17, 20, 26, 30, 34, 39, 51, 52, 60, 65, 68, 78, 85, 102, 130, 156, 170, 195, 204, 221, 255, 260, 340, 390, 442, 510, 663, 780, 884, 1020, 1105, 1326, 1523, 2210, 2652, 3046, 3315, 4420, 4569, 6092, 6630, 7615, 9138, 13260, 15230, 18276, 19799, 22845, 25891, 30460, 39598, 45690, 51782, 59397, 77673, 79196, 91380, 98995, 103564, 118794, 129455, 155346, 197990, 237588, 258910, 296985, 310692, 336583, 388365, 395980, 517820, 593970, 673166, 776730, 1009749, 1187940, 1346332, 1553460, 1682915, 2019498, 3365830, 4038996, 5048745, 6731660, 10097490, 20194980]

約数ペア:

[(1, 20194980), (2, 10097490), (3, 6731660), (4, 5048745), (5, 4038996), (6, 3365830), (10, 2019498), (12, 1682915), (13, 1553460), (15, 1346332), (17, 1187940), (20, 1009749), (26, 776730), (30, 673166), (34, 593970), (39, 517820), (51, 395980), (52, 388365), (60, 336583), (65, 310692), (68, 296985), (78, 258910), (85, 237588), (102, 197990), (130, 155346), (156, 129455), (170, 118794), (195, 103564), (204, 98995), (221, 91380), (255, 79196), (260, 77673), (340, 59397), (390, 51782), (442, 45690), (510, 39598), (663, 30460), (780, 25891), (884, 22845), (1020, 19799), (1105, 18276), (1326, 15230), (1523, 13260), (2210, 9138), (2652, 7615), (3046, 6630), (3315, 6092), (4420, 4569)]