20355460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{137}}^1$

素因数の和:205

約数の個数: 96

約数和(自身を含む): 50077440

約数和(自身を除く): 29721980

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 23, 34, 38, 46, 68, 76, 85, 92, 95, 115, 137, 170, 190, 230, 274, 323, 340, 380, 391, 437, 460, 548, 646, 685, 782, 874, 1292, 1370, 1564, 1615, 1748, 1955, 2185, 2329, 2603, 2740, 3151, 3230, 3910, 4370, 4658, 5206, 6302, 6460, 7429, 7820, 8740, 9316, 10412, 11645, 12604, 13015, 14858, 15755, 23290, 26030, 29716, 31510, 37145, 44251, 46580, 52060, 53567, 59869, 63020, 74290, 88502, 107134, 119738, 148580, 177004, 214268, 221255, 239476, 267835, 299345, 442510, 535670, 598690, 885020, 1017773, 1071340, 1197380, 2035546, 4071092, 5088865, 10177730, 20355460]

約数ペア:

[(1, 20355460), (2, 10177730), (4, 5088865), (5, 4071092), (10, 2035546), (17, 1197380), (19, 1071340), (20, 1017773), (23, 885020), (34, 598690), (38, 535670), (46, 442510), (68, 299345), (76, 267835), (85, 239476), (92, 221255), (95, 214268), (115, 177004), (137, 148580), (170, 119738), (190, 107134), (230, 88502), (274, 74290), (323, 63020), (340, 59869), (380, 53567), (391, 52060), (437, 46580), (460, 44251), (548, 37145), (646, 31510), (685, 29716), (782, 26030), (874, 23290), (1292, 15755), (1370, 14858), (1564, 13015), (1615, 12604), (1748, 11645), (1955, 10412), (2185, 9316), (2329, 8740), (2603, 7820), (2740, 7429), (3151, 6460), (3230, 6302), (3910, 5206), (4370, 4658)]