72970640

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{787}}^1$

素因数の和:880

約数の個数: 80

約数和(自身を含む): 181744320

約数和(自身を除く): 108773680

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 61, 76, 80, 95, 122, 152, 190, 244, 304, 305, 380, 488, 610, 760, 787, 976, 1159, 1220, 1520, 1574, 2318, 2440, 3148, 3935, 4636, 4880, 5795, 6296, 7870, 9272, 11590, 12592, 14953, 15740, 18544, 23180, 29906, 31480, 46360, 48007, 59812, 62960, 74765, 92720, 96014, 119624, 149530, 192028, 239248, 240035, 299060, 384056, 480070, 598120, 768112, 912133, 960140, 1196240, 1824266, 1920280, 3648532, 3840560, 4560665, 7297064, 9121330, 14594128, 18242660, 36485320, 72970640]

約数ペア:

[(1, 72970640), (2, 36485320), (4, 18242660), (5, 14594128), (8, 9121330), (10, 7297064), (16, 4560665), (19, 3840560), (20, 3648532), (38, 1920280), (40, 1824266), (61, 1196240), (76, 960140), (80, 912133), (95, 768112), (122, 598120), (152, 480070), (190, 384056), (244, 299060), (304, 240035), (305, 239248), (380, 192028), (488, 149530), (610, 119624), (760, 96014), (787, 92720), (976, 74765), (1159, 62960), (1220, 59812), (1520, 48007), (1574, 46360), (2318, 31480), (2440, 29906), (3148, 23180), (3935, 18544), (4636, 15740), (4880, 14953), (5795, 12592), (6296, 11590), (7870, 9272)]