19198920

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{397}}^1$

素因数の和:455

約数の個数: 128

約数和(自身を含む): 64189440

約数和(自身を除く): 44990520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 31, 39, 40, 52, 60, 62, 65, 78, 93, 104, 120, 124, 130, 155, 156, 186, 195, 248, 260, 310, 312, 372, 390, 397, 403, 465, 520, 620, 744, 780, 794, 806, 930, 1191, 1209, 1240, 1560, 1588, 1612, 1860, 1985, 2015, 2382, 2418, 3176, 3224, 3720, 3970, 4030, 4764, 4836, 5161, 5955, 6045, 7940, 8060, 9528, 9672, 10322, 11910, 12090, 12307, 15483, 15880, 16120, 20644, 23820, 24180, 24614, 25805, 30966, 36921, 41288, 47640, 48360, 49228, 51610, 61535, 61932, 73842, 77415, 98456, 103220, 123070, 123864, 147684, 154830, 159991, 184605, 206440, 246140, 295368, 309660, 319982, 369210, 479973, 492280, 619320, 639964, 738420, 799955, 959946, 1279928, 1476840, 1599910, 1919892, 2399865, 3199820, 3839784, 4799730, 6399640, 9599460, 19198920]

約数ペア:

[(1, 19198920), (2, 9599460), (3, 6399640), (4, 4799730), (5, 3839784), (6, 3199820), (8, 2399865), (10, 1919892), (12, 1599910), (13, 1476840), (15, 1279928), (20, 959946), (24, 799955), (26, 738420), (30, 639964), (31, 619320), (39, 492280), (40, 479973), (52, 369210), (60, 319982), (62, 309660), (65, 295368), (78, 246140), (93, 206440), (104, 184605), (120, 159991), (124, 154830), (130, 147684), (155, 123864), (156, 123070), (186, 103220), (195, 98456), (248, 77415), (260, 73842), (310, 61932), (312, 61535), (372, 51610), (390, 49228), (397, 48360), (403, 47640), (465, 41288), (520, 36921), (620, 30966), (744, 25805), (780, 24614), (794, 24180), (806, 23820), (930, 20644), (1191, 16120), (1209, 15880), (1240, 15483), (1560, 12307), (1588, 12090), (1612, 11910), (1860, 10322), (1985, 9672), (2015, 9528), (2382, 8060), (2418, 7940), (3176, 6045), (3224, 5955), (3720, 5161), (3970, 4836), (4030, 4764)]