221591720

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{31}}^1\times {\mathrm{521}}^1$

素因数の和:584

約数の個数: 128

約数和(自身を含む): 601344000

約数和(自身を除く): 379752280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 49, 56, 62, 70, 98, 124, 140, 155, 196, 217, 245, 248, 280, 310, 343, 392, 434, 490, 521, 620, 686, 868, 980, 1042, 1085, 1240, 1372, 1519, 1715, 1736, 1960, 2084, 2170, 2605, 2744, 3038, 3430, 3647, 4168, 4340, 5210, 6076, 6860, 7294, 7595, 8680, 10420, 10633, 12152, 13720, 14588, 15190, 16151, 18235, 20840, 21266, 25529, 29176, 30380, 32302, 36470, 42532, 51058, 53165, 60760, 64604, 72940, 80755, 85064, 102116, 106330, 113057, 127645, 129208, 145880, 161510, 178703, 204232, 212660, 226114, 255290, 323020, 357406, 425320, 452228, 510580, 565285, 646040, 714812, 791399, 893515, 904456, 1021160, 1130570, 1429624, 1582798, 1787030, 2261140, 3165596, 3574060, 3956995, 4522280, 5539793, 6331192, 7148120, 7913990, 11079586, 15827980, 22159172, 27698965, 31655960, 44318344, 55397930, 110795860, 221591720]

約数ペア:

[(1, 221591720), (2, 110795860), (4, 55397930), (5, 44318344), (7, 31655960), (8, 27698965), (10, 22159172), (14, 15827980), (20, 11079586), (28, 7913990), (31, 7148120), (35, 6331192), (40, 5539793), (49, 4522280), (56, 3956995), (62, 3574060), (70, 3165596), (98, 2261140), (124, 1787030), (140, 1582798), (155, 1429624), (196, 1130570), (217, 1021160), (245, 904456), (248, 893515), (280, 791399), (310, 714812), (343, 646040), (392, 565285), (434, 510580), (490, 452228), (521, 425320), (620, 357406), (686, 323020), (868, 255290), (980, 226114), (1042, 212660), (1085, 204232), (1240, 178703), (1372, 161510), (1519, 145880), (1715, 129208), (1736, 127645), (1960, 113057), (2084, 106330), (2170, 102116), (2605, 85064), (2744, 80755), (3038, 72940), (3430, 64604), (3647, 60760), (4168, 53165), (4340, 51058), (5210, 42532), (6076, 36470), (6860, 32302), (7294, 30380), (7595, 29176), (8680, 25529), (10420, 21266), (10633, 20840), (12152, 18235), (13720, 16151), (14588, 15190)]